广谱高效微生物防腐剂产生菌的筛选及应用
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基于STEM教育下的中学化学教学模式初探
AbstractThis article conducts a questionnaire survey on the problems of traditionaleducation,and integrates the STEM education concept into the teaching process toachieve the purpo...
家园沟通—幼儿园新生家访工作对策研究
类型、内容、作用、经验技巧和心得体会等问题进行交流。(3)问卷法笔者随机选取本市五所幼儿园,其中一级园2所,二级园3所。教师问卷采取当场填写当场回收的方式,每所幼儿园随机抽取15名带班教...
两段式生物质的金属炭催化裂解的研究
Catalytie cracking of biomass using char-based catalyst in a two-stage Fixed-bedreaetorAbstractThe fir sawdust was used in this experience.We used two vertical fixed bed reactor.Th...
纳米CeO2光催化材料合成与性能研究
AbstractDue to the rapid development of industry and other factors,the problem of waterpollution has become more and more serious.How to efficiently degrade organic dyes andpolluta...
年产10万吨甲醇制丙烯的工艺设计
北京理工大学珠海学院2020届本科本科生毕业设计Process design of producing 100,000 tons of methanol topropylene per yearAbstractPropylene has been an important component of the chemic...
年产2000吨聚酰亚胺纤维生产设计工艺
2000 tons of Polyimide Fiber process designAbstractThis design is the production process design of 2000 tons per year polyimide fiber.In thedesign,it mainly introduces two modules:...
年产2500吨脲醛树脂胶黏剂的合成工艺设计
ABSTRACUrea formaldehyde resin,referred to as UF,is a high molecular polymer obtained bythe reaction of urea and formaldehyde,through addition and polycondensation.But so far,the s...
沙棘果油的提取及对小鼠烫伤的影响
目录1仪器与试药1.1仪器1.2试药…2方法与结果2.1正交实验设计2.2对照品溶液的制备2.3样品溶液的制备22.4色谱条件.…2.5线性范围.。22.6精密度实验32.7重复性实验32.8稳定性实验2.9加样回收率实...